Dog hit – when does the liability of the dog owner reimburse?

Hi! Last Thursday around 23:30 clock a dog jumped in front of my car at speed 50. The dog is fortunately back on its feet and the dog owner wants to get in touch with his insurance this week. Is it enough if I have an official estimate with photos taken with an acquaintance? He runs a registered workshop and has been screwing around cars for 30 years, so he has the corresponding experience regarding the assessment of the damage. my question is actually how long it usually takes for insurance to reimburse the corresponding amount and whether an official estimate with photos for such a “dog liability insurance” for reimbursement from: Thank you in advance. MfG